package com.laowang.controller;

import com.laowang.dataoject.ProductCategory;
import com.laowang.dataoject.ProductInfo;
import com.laowang.sercice.CategoryService;
import com.laowang.sercice.ProductService;
import com.laowang.utils.ResultVoUtil;
import com.laowang.vo.ProductInfoVo;
import com.laowang.vo.ProductVo;
import com.laowang.vo.ResultVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

/**
 * 买家
 * Created by Administrator on 2019/1/9.
 */
@RestController
@RequestMapping("/buyer/product")
public class BuyerProductController {
    @Autowired
    private ProductService productService;
    @Autowired
    private CategoryService categoryService;
    @GetMapping("/list")
    public ResultVo list(){
        //查询所有的上架商品
        List<ProductInfo> productInfoList = productService.findUpAllProduct();

        //查询类目，，一次性查询

        //传统的方法
//        List<Integer> categoryTypeList = new ArrayList<>();
//        for (ProductInfo productInfo:productInfoList
//             ) {
//            categoryTypeList.add(productInfo.getCategoryType());
//        }
        //精简方法
        List<Integer> categoryTypeList = productInfoList.stream()
                .map(e -> e.getCategoryType())
                .collect(Collectors.toList());
        List<ProductCategory> productCategoryList
                = categoryService.findByCategoryTypeIn(categoryTypeList);


        //数据拼装
        List<ProductVo> productVoList = new ArrayList<>();
        for (ProductCategory productCategory:productCategoryList
             ) {
            ProductVo productVo = new ProductVo();
            productVo.setCategoryType(productCategory.getCategoryType());
            productVo.setCategoryName(productCategory.getCategoryName());
            List<ProductInfoVo> productInfoVoList = new ArrayList<>();
            for (ProductInfo productInfo:productInfoList
                 ) {
                if (productInfo.getCategoryType().equals(productCategory.getCategoryType())){
                    ProductInfoVo productInfoVo = new ProductInfoVo();
                    BeanUtils.copyProperties(productInfo,productInfoVo);
                    productInfoVoList.add(productInfoVo);

                }
            }
            productVo.setProductInfoVoList(productInfoVoList);
            productVoList.add(productVo);
        }


        return ResultVoUtil.success(productVoList);

    }
}
